diff --git a/dockerfiles/alpine/Dockerfile b/dockerfiles/alpine/Dockerfile
index 1a445a31..a3036a12 100644
--- a/dockerfiles/alpine/Dockerfile
+++ b/dockerfiles/alpine/Dockerfile
@@ -33,6 +33,7 @@ COPY cli/Cargo.toml cli/Cargo.toml
 COPY backend/Cargo.toml backend/Cargo.toml
 COPY utils/Cargo.toml utils/Cargo.toml
 COPY proc_macro/Cargo.toml proc_macro/Cargo.toml
+COPY proc_macro/src/lib.rs proc_macro/src/lib.rs
 COPY frontend/Cargo.toml frontend/Cargo.toml
 COPY .cargo .cargo
 RUN echo "fn main() {println!(\"if you see this, the build broke\")}" > backend/src/lib.rs \
@@ -40,7 +41,6 @@ RUN echo "fn main() {println!(\"if you see this, the build broke\")}" > backend/
   && echo "fn main() {println!(\"if you see this, the build broke\")}" > frontend/build.rs \
   && echo "fn main() {println!(\"if you see this, the build broke\")}" > cli/src/lib.rs \
   && echo "fn main() {println!(\"if you see this, the build broke\")}" > utils/src/lib.rs \
-  && echo "fn main() {println!(\"if you see this, the build broke\")}" > proc_macro/src/lib.rs \
   && echo "fn main() {println!(\"if you see this, the build broke\")}" > build.rs \
   && cargo build-backend --profile=$BUILD_PROFILE --target=$BUILD_TARGET